While the qualcomm’s quad-core processor powered Galaxy S4, model no. GT-I9505, already had two Android 4.3 update firmwares leaked for it, the users of the Samsung’s Octa-core Exynos processor powered S4, GT-I9500, were left to watching — and cry a little bit, hideously or not — over lack of update for them from Samsung.

And that was already in addition to pain of lack of a good AOSP ROM on the GT-I9500 Galaxy S4, as developer community could not cook a nice AOSP Android 4.3 ROM because Samsung has that stubbornness of not sharing enough sources to let developers do their thing. Yes, GT-I9505 had some good AOSP Android 4.3 ROMs already.

But no more, the official Samsung Android 4.3 update is here, and that should pave the way for cool Android 4.3 based ROMs, what if AOSP is still a far sight. Last thing users of GT-I9500 Galaxy S4 would be hoping would be that Samsung shares enough sources for developer so that they can have an AOSP pure stock Android 4.3 ROM for their powerhouse.

NOTE: This is a test firmware, a leaked one if you mind. So, we’re still a little bit away from a full and final Android 4.3 update from Samsung, which will be made available via Samsung’s official update software, kies, too.

You can flash/install the update using Odin software yourself, or if you can wait a little bit, our full and detailed step-by-step guide is about to be published — that would help you completely in easily installing the Android 4.3 update on your Galaxy S4 GT-I9500, while taking care of precautions you need to take and procedures you got to follow to not miss on anything, and avoid any loss.

Apart form the Android 4.3 upgrade, the I9500XXUEMJ5 update also brings support for KNOX and Galaxy Gear and other minor improvements in general.